I cannot recommend the Citymapper app enough. It’s free and available for both iPhone and android phones and has been invaluable for me the past year.

Citymapper has everything you need to get around and to find your way in London. It includes real time maps, routes, all public transport including tube and bus routes and any disruptions and diversions. It has walking routes, tells you how long you will take travelling from A to B and even tells you roughly how much a cab will cost you if you choose to hail one.

If you don’t have a smartphone at hand you can also use the Citymapper online on its Superrouter website. Your travel in London will never be the same!